7[2]Fisher R A. The use of multiple measurements in taxonomic problems. Annual Eugenics, 1936 ;7(2): 179-188
8[3]Cybenko G. Approximation by superposition of a sigmoidal function. Mathematics of Control Signals and Systems, 1989; 2 ( 4 ):303-314
9[4]Hornik K, Stinchcombe M, White H. 0niversal approximation of an unknown mapping and its derivatives using multilayer feedforward networks. IEEE Transactions on Neural Networks,1990;3(5) :551-560
10[5]Hashem S. Sensitivity analysis for feedforward artificial neural networks with differentiable activation funcitons. Proceedings of the 1992 IEEE International Joint Conference on Neural Networks, 1992;1:419-424